1iptables_selinux(8) SELinux Policy iptables iptables_selinux(8)
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6 iptables_selinux - Security Enhanced Linux Policy for the iptables pro‐
7 cesses
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10 Security-Enhanced Linux secures the iptables processes via flexible
11 mandatory access control.
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13 The iptables processes execute with the iptables_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep iptables_t
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24 The iptables_t SELinux type can be entered via the iptables_exec_t file
25 type.
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27 The default entrypoint paths for the iptables_t domain are the follow‐
28 ing:
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30 /sbin/ipchains.*, /sbin/iptables.*, /sbin/ip6tables.*,
31 /usr/sbin/ipchains.*, /sbin/iptables-multi.*, /sbin/ip6tables-multi.*,
32 /sbin/iptables-restore.*, /sbin/ip6tables-restore.*, /sbin/ipvsadm,
33 /sbin/ebtables, /usr/sbin/iptables, /sbin/ipvsadm-save, /sbin/ipvsadm-
34 restore, /sbin/ebtables-restore, /usr/sbin/iptables-multi,
35 /usr/sbin/iptables-restore
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38 SELinux defines process types (domains) for each process running on the
39 system
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41 You can see the context of a process using the -Z option to ps
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43 Policy governs the access confined processes have to files. SELinux
44 iptables policy is very flexible allowing users to setup their iptables
45 processes in as secure a method as possible.
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47 The following process types are defined for iptables:
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49 iptables_t
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51 Note: semanage permissive -a iptables_t can be used to make the process
52 type iptables_t permissive. SELinux does not deny access to permissive
53 process types, but the AVC (SELinux denials) messages are still gener‐
54 ated.
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58 SELinux policy is customizable based on least access required. ipta‐
59 bles policy is extremely flexible and has several booleans that allow
60 you to manipulate the policy and run iptables with the tightest access
61 possible.
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65 If you want to allow all daemons the ability to read/write terminals,
66 you must turn on the allow_daemons_use_tty boolean. Disabled by
67 default.
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69 setsebool -P allow_daemons_use_tty 1
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73 If you want to allow all domains to use other domains file descriptors,
74 you must turn on the allow_domain_fd_use boolean. Enabled by default.
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76 setsebool -P allow_domain_fd_use 1
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80 If you want to allow confined applications to run with kerberos, you
81 must turn on the allow_kerberos boolean. Enabled by default.
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83 setsebool -P allow_kerberos 1
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87 If you want to allow sysadm to debug or ptrace all processes, you must
88 turn on the allow_ptrace boolean. Disabled by default.
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90 setsebool -P allow_ptrace 1
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94 If you want to allow system to run with NIS, you must turn on the
95 allow_ypbind boolean. Disabled by default.
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97 setsebool -P allow_ypbind 1
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101 If you want to allow dhcpc client applications to execute iptables com‐
102 mands, you must turn on the dhcpc_exec_iptables boolean. Disabled by
103 default.
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105 setsebool -P dhcpc_exec_iptables 1
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109 If you want to allow all domains to have the kernel load modules, you
110 must turn on the domain_kernel_load_modules boolean. Disabled by
111 default.
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113 setsebool -P domain_kernel_load_modules 1
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117 If you want to allow all domains to execute in fips_mode, you must turn
118 on the fips_mode boolean. Enabled by default.
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120 setsebool -P fips_mode 1
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124 If you want to enable reading of urandom for all domains, you must turn
125 on the global_ssp boolean. Disabled by default.
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127 setsebool -P global_ssp 1
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131 If you want to allow confined applications to use nscd shared memory,
132 you must turn on the nscd_use_shm boolean. Enabled by default.
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134 setsebool -P nscd_use_shm 1
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138 If you want to disable transitions to insmod, you must turn on the
139 secure_mode_insmod boolean. Disabled by default.
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141 setsebool -P secure_mode_insmod 1
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146 The SELinux process type iptables_t can manage files labeled with the
147 following file types. The paths listed are the default paths for these
148 file types. Note the processes UID still need to have DAC permissions.
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150 etc_runtime_t
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152 /[^/]+
153 /etc/mtab.*
154 /etc/blkid(/.*)?
155 /etc/nologin.*
156 /etc/zipl.conf.*
157 /etc/smartd.conf.*
158 /etc/.fstab.hal..+
159 /etc/sysconfig/ip6?tables.save
160 /halt
161 /etc/motd
162 /fastboot
163 /poweroff
164 /etc/issue
165 /etc/cmtab
166 /forcefsck
167 /.autofsck
168 /.suspended
169 /fsckoptions
170 /etc/HOSTNAME
171 /.autorelabel
172 /etc/securetty
173 /etc/nohotplug
174 /etc/issue.net
175 /etc/killpower
176 /etc/ioctl.save
177 /etc/reader.conf
178 /etc/fstab.REVOKE
179 /etc/mtab.fuselock
180 /etc/network/ifstate
181 /etc/sysconfig/hwconf
182 /etc/ptal/ptal-printd-like
183 /etc/xorg.conf.d/00-system-setup-keyboard.conf
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185 initrc_tmp_t
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188 iptables_tmp_t
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191 iptables_var_run_t
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194 mnt_t
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196 /mnt(/[^/]*)
197 /mnt(/[^/]*)?
198 /rhev(/[^/]*)?
199 /media(/[^/]*)
200 /media(/[^/]*)?
201 /etc/rhgb(/.*)?
202 /media/.hal-.*
203 /net
204 /afs
205 /rhev
206 /misc
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208 psad_tmp_t
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211 psad_var_log_t
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213 /var/log/psad(/.*)?
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215 shorewall_var_lib_t
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217 /var/lib/shorewall(/.*)?
218 /var/lib/shorewall6(/.*)?
219 /var/lib/shorewall-lite(/.*)?
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221 system_conf_t
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223 /etc/sysctl.conf(.old)?
224 /etc/sysconfig/ip6?tables.*
225 /etc/sysconfig/ipvsadm.*
226 /etc/sysconfig/ebtables.*
227 /etc/sysconfig/system-config-firewall.*
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229 tmp_t
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231 /tmp
232 /usr/tmp
233 /var/tmp
234 /tmp-inst
235 /var/tmp-inst
236 /var/tmp/vi.recover
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240 SELinux requires files to have an extended attribute to define the file
241 type.
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243 You can see the context of a file using the -Z option to ls
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245 Policy governs the access confined processes have to these files.
246 SELinux iptables policy is very flexible allowing users to setup their
247 iptables processes in as secure a method as possible.
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249 STANDARD FILE CONTEXT
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251 SELinux defines the file context types for the iptables, if you wanted
252 to store files with these types in a diffent paths, you need to execute
253 the semanage command to sepecify alternate labeling and then use
254 restorecon to put the labels on disk.
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256 semanage fcontext -a -t iptables_var_run_t '/srv/myiptables_con‐
257 tent(/.*)?'
258 restorecon -R -v /srv/myiptables_content
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260 Note: SELinux often uses regular expressions to specify labels that
261 match multiple files.
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263 The following file types are defined for iptables:
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267 iptables_exec_t
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269 - Set files with the iptables_exec_t type, if you want to transition an
270 executable to the iptables_t domain.
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273 Paths:
274 /sbin/ipchains.*, /sbin/iptables.*, /sbin/ip6tables.*,
275 /usr/sbin/ipchains.*, /sbin/iptables-multi.*, /sbin/ip6tables-
276 multi.*, /sbin/iptables-restore.*, /sbin/ip6tables-restore.*,
277 /sbin/ipvsadm, /sbin/ebtables, /usr/sbin/iptables, /sbin/ipvsadm-
278 save, /sbin/ipvsadm-restore, /sbin/ebtables-restore,
279 /usr/sbin/iptables-multi, /usr/sbin/iptables-restore
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282 iptables_initrc_exec_t
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284 - Set files with the iptables_initrc_exec_t type, if you want to tran‐
285 sition an executable to the iptables_initrc_t domain.
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289 iptables_tmp_t
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291 - Set files with the iptables_tmp_t type, if you want to store iptables
292 temporary files in the /tmp directories.
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296 iptables_var_run_t
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298 - Set files with the iptables_var_run_t type, if you want to store the
299 iptables files under the /run or /var/run directory.
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303 Note: File context can be temporarily modified with the chcon command.
304 If you want to permanently change the file context you need to use the
305 semanage fcontext command. This will modify the SELinux labeling data‐
306 base. You will need to use restorecon to apply the labels.
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310 semanage fcontext can also be used to manipulate default file context
311 mappings.
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313 semanage permissive can also be used to manipulate whether or not a
314 process type is permissive.
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316 semanage module can also be used to enable/disable/install/remove pol‐
317 icy modules.
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319 semanage boolean can also be used to manipulate the booleans
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322 system-config-selinux is a GUI tool available to customize SELinux pol‐
323 icy settings.
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327 This manual page was auto-generated using sepolicy manpage .
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331 selinux(8), iptables(8), semanage(8), restorecon(8), chcon(1) , setse‐
332 bool(8)
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336iptables 15-06-03 iptables_selinux(8)